Professor Lucas Lepri shows how to sweep the opponent using the one leg X or X guard. Lucas starts standing and pulls guard going to the one leg X. The opponent pushes the foot away and Lucas re-engages to the one leg X. This scenario is repeated a couple of times, and on the third time, Lucas sweeps the opponent back using the one leg X. Another scenario is if Lucas is not able to sweep with the one leg X, then he transitions to the X guard. From the X guard, he grips the pants and uses his legs to lift the opponent up. He pushes the opponent back and sweeps.